Pierre likes to hide in plain site and, as seen here, he likes his bags, regardless of thier variety (see reduce, reuse, re-re-cat). He was most likely waiting for an unsuspecting victim (usualy Newton) to pass by and then pounce.
Pierre has already worked himself to the point of needing to lay down to be able to continue the laborious task of fishing on the iPad.
He is now watching more and fishing less. Eventually the fish swims unhindered and gets taken away.
The mighty fisherman, exhausted by his toil, must rest until the next unsuspecting iPad user comes home. Then, the cycle will begin again.
Whenever a reusable shopping bag comes into the house, the cats think it is a new fort just for them. This one hasn’t been used as much so the sides are stiffer than some, so Pierre can’t snuggle all the way inside like he can with others.
Talia comes by for a turn, but Pierre watches from a safe distance to make sure she gets her fair time and nothing extra.
Even Newton makes a quick stop to see if there is anything interesting happening, but he was distracted by his photo being taken, then by another object in the other room and took off.